The Turks conquered this region of Anatolia at the beginning of the 11th century. Emir Ahmet Shah founded a mosque with its adjoining hospital at Divrigi in 1228–29. The mosque incorporates a sole prayer room and is topped off by two cupolas. This masterpiece of Islamic architecture holds unique features of a highly refined system of vault construction and imaginative, energetic decorative sculpture – for the most part on the three doorways, which strongly contrasts the plain walls of the interior. --WHMNet paraphrase from the description at WHC Site, where additional information is available.

Divriği Great Mosque, was built in 1299 situated in the city of Divriği in Sivas Province, Eastern Anatolia, Turkey. The architect was Hürremshah of Ahlat and the mosque was built on the order of Ahmet Shah, ruler of the Beylik of Mengücek. The inscriptions contain words of praise to the Anatolian Seljuk sultan Alaeddin Keykubad I. The mosque, along with the adjoining Medical Center (Darüşşifa), built simultaneously with the mosque by Turan Melek Sultan, daughter of the Mengücek ruler of Erzincan, Fahreddin Behram Shah, are included on UNESCO's World Heritage List by virtue of the exquisite carvings and architecture of both building. It is considered as one of the most important works of architecture of Anatolia. The geometrical and floral patterned reliefs found on the main door in particular attract great interest. --Wikipedia. Text is available under the Creative Commons Attribution-ShareAlike License.